html, body {
    margin: 0;
    padding: 0;
    height: 100%;
    background: #000;
    font-family: 'Courier New', Courier, monospace;
    color: #0f0;
}

#console {
    width: 90%;
    margin: 2em auto;
    min-height: 200px;
    max-height: 50vh;
    border: 2px solid #0f0;
    padding: 1em;
    box-sizing: border-box;
    overflow-y: auto;
    background: #000;
    color: #0f0;
    white-space: pre-wrap;
}

button {
    display: block;
    width: 80%;
    max-width: 400px;
    margin: 1em auto;
    padding: 0.8em;
    font-size: 1.1em;
    border: none;
    border-radius: 8px;
    color: #fff;
    cursor: pointer;
}

.red {
    background: #c00;
}

.gray {
    background: #444;
    color: #ddd;
}

#actions button {
    background: #444;
    color: #ddd;
}

#commandInput {
    display: block;
    width: 80%;
    max-width: 400px;
    margin: 1em auto;
    padding: 0.6em;
    font-size: 1em;
    border-radius: 8px;
    border: 2px solid #444;
    background: #000;
    color: #0f0;
    box-sizing: border-box;
}